Design and Construction Handbook - Los Angeles World Airports

Guide Specification
PART 2 - PRODUCTS
2.1 PACKAGED WATER CHILLERS
A. Manufacturers:
1. York.
2. Carrier.
3. Trane.
B. Product Description: Factory assembled and tested, packaged, water cooled, liquid chillers
consisting of compressors, compressor motor, condenser, evaporator, refrigeration accessories,
instrument and control panel including gages and indicating lights, auxiliary components and
accessories, and motor starters.
C. Refrigerant shall be R-410A or R-407C.
2.2 HERMETIC COMPRESSORS
A. Reciprocating Compressors:
1. Unit: Hermetically sealed motor-compressor with crankcase heater, suction and discharge
service valves, rubber-in-shear isolators, and control panel.
2. Motor: Constant speed 3600 rpm, suction gas cooled with overheating protection.
3. Crankcase Heater: Energize continuously.
B. Scroll Compressors:
1. Unit: Direct drive, hermetic, 3600 RPM, fixed compression, scroll motor-compressor
with control panel.
2. Features: Centrifugal oil pump, sump oil heater, oil level sight glass, oil charging valve,
two point lubrication for each motor bearing, flooded lubrication for journal and thrust
bearings, check valve on scroll discharge port.
3. Motor: Suction-gas cooled, hermetically sealed, squirrel cage induction.
4. Automatic Capacity Reduction: Electronic logic controller and air temperature sensor
controls unit and hot gas bypass regulator valve.
2.3 SEMI-HERMETIC COMPRESSORS
A. Reciprocating Compressors:
1. Unit: Serviceable hermetic reciprocating motor-compressor with positive displacement
oil pump lubrication system, spring loaded heads and replaceable cylinder liners,
crankcase heater, suction inlet screen, discharge service valves, and control panel.
2. Automatic Capacity Reduction Equipment solenoid gas pressure operated. Furnish
capability for unloaded compressor start.
3. Motor: Constant speed 1800 rpm, suction gas cooled with electronic overheating
protection in each phase, reduced voltage starting.
PACKAGED WATER CHILLERS – RECIPROCATING, SCROLL, AND SCREW
23 64 11 - 3 Mechanical Systems